CN220895714U

CN220895714U - Battery box and battery pack

Info

Publication number: CN220895714U
Application number: CN202322511696.1U
Authority: CN
Inventors: 温盛德
Original assignee: Eve Energy Co Ltd
Current assignee: Eve Energy Co Ltd
Priority date: 2023-09-14
Filing date: 2023-09-14
Publication date: 2024-05-03
Anticipated expiration: 2033-09-14

Abstract

The utility model discloses a battery box and a battery pack, wherein the battery box comprises a box body and a lifting lug structure, the box body is provided with a side frame, the side frame is provided with a containing cavity part, the lifting lug structure comprises a lifting lug fixing part and a lifting lug main body part, the lifting lug main body part is connected to one side of the lifting lug fixing part, the lifting lug fixing part is arranged in the containing cavity part and is connected with the containing cavity part, and the lifting lug main body part is positioned outside the side frame and is used for being connected with a lifting point sleeve. According to the battery box body, the part of the lifting lug structure is fixedly connected to the inside of the side frame, so that stress applied to the side frame by the lifting lug structure can be dispersed from multiple positions, and the lifting lug structure is prevented from being broken due to the fact that the stress is concentrated at a specific connection position, and therefore the connection strength of the lifting lug structure and the side frame is improved.

Description

Battery box and battery pack

Technical Field

The utility model relates to the technical field of energy storage, in particular to a battery box and a battery pack.

Background

With the development of new energy technology, product categories with battery packs as energy supply main bodies appear in various industries, and the popularization of new energy automobiles is overwhelmed worldwide mainly when belonging to the automobile industry. The battery pack mainly comprises a battery box body, a battery core module and the like, wherein the battery core module is arranged in the battery box body.

The battery box mainly comprises a cover plate and a lower box body, wherein the cover plate covers the lower box body, so that a containing cavity is formed by matching with the lower box body and used for containing the battery cell, and hanging point sleeves are arranged on two sides of the lower box body to install the battery pack on a mobile carrier (such as an automobile, an aircraft and the like).

When the hanging point sleeve is connected with the lower box body, the hanging point sleeve is generally arranged on the side frame of the lower box body, and in the prior art, a lifting lug structure is generally arranged on the side frame of the lower box body and is used for being matched with the hanging point sleeve for installation; the lug structure on the lower box side frame is usually welded on the side frame, and this leads to the battery box when through hoisting point telescopic joint on removing the carrier, because battery package weight is overweight, and removes the carrier and receive circumstances such as jolt, under the vibrations effect, leads to the lug to take off with the welded part of lower box side frame easily, has the potential safety hazard.

Disclosure of utility model

The embodiment of the utility model mainly aims to provide a battery box and a battery pack, and aims to solve the technical problem that in the prior art, the connection strength between a lifting lug on the battery box and the lifting lug is insufficient.

The embodiment of the utility model provides a battery box body, which comprises:

The box body is provided with a side frame, and the side frame is internally provided with an accommodating cavity part;

the lifting lug structure comprises a lifting lug fixing part and a lifting lug main body part, wherein the lifting lug main body part is connected to one side of the lifting lug fixing part, the lifting lug fixing part is arranged in the accommodating cavity part and is connected with the accommodating cavity part, and the lifting lug main body part is positioned outside the side frame and is used for being connected with a lifting point sleeve.

In some embodiments of the utility model, the shackle fixing portion is integrally formed with the shackle body portion.

In some embodiments of the present utility model, the battery case further includes a first connecting member and a second connecting member, the first connecting member sequentially penetrates through the top of the accommodating cavity portion and the top of the lifting lug fixing portion from the top of the side frame and connects the two, and the second connecting member sequentially penetrates through the bottom of the accommodating cavity portion and the bottom of the lifting lug fixing portion from the bottom of the side frame and connects the two.

In some embodiments of the present utility model, the lifting lug fixing portion includes a first annular ring body and a first supporting rib disposed in the first annular ring body, and two ends of the first supporting rib are respectively connected to opposite or adjacent two sides of the first annular ring body.

In some embodiments of the present utility model, the lifting lug main body portion includes a second annular ring body and a second supporting rib disposed in the second annular ring body, two ends of the second supporting rib are respectively connected with two sides of the second annular ring body, which are opposite or adjacent to each other, and one end of the second annular ring body is connected with one side of the first annular ring body.

In some embodiments of the present utility model, the second annular ring body includes a first end and a second end, the first end being an end of the second annular ring body connected to the first annular ring body, the second end being an end of the second annular ring body remote from the first annular ring body;

The area of the orthographic projection of the first end part on the first annular ring body is larger than the area of the orthographic projection of the second end part on the first annular ring body.

In some embodiments of the present utility model, the second annular ring body includes a straight section and a vertical section connected to one side of the straight section, one end of the straight section, which is close to the first annular ring body, is flush with one end of the vertical section, which is close to the first annular ring body, and one ends of the straight section, which are close to the side frames, are both connected to the first annular ring body, and the hanging point sleeve is connected to the straight section.

In some embodiments of the present utility model, the shackle structure has a near ground side and a far ground side, the shackle structure having a sleeve mounting hole disposed therethrough;

The lifting point sleeve comprises a bottom and a main body part arranged on the bottom, the bottom is abutted to the near-ground side and connected with the near-ground side, and the main body part is arranged in the sleeve mounting hole.

In some embodiments of the present utility model, the accommodating cavity portion has an insertion hole portion, the lifting lug fixing portion has an insertion portion that is in insertion fit with the insertion hole portion, and when the lifting lug fixing portion is disposed in the accommodating cavity portion, the insertion portion is inserted into the insertion hole portion.

In some embodiments of the present utility model, the present utility model also provides a battery pack including:

a battery cell module;

The battery box body further comprises a bottom plate and a cover plate, the cover plate is arranged at the top of the side frame in a covering mode, the bottom plate is connected to the bottom of the side frame, the bottom plate, the side frame and the cover plate are matched to form a battery cell accommodating cavity, and the battery cell module is arranged in the battery cell accommodating cavity.

The embodiment of the utility model provides a battery box and a battery pack, wherein the battery box is provided with a containing cavity part in a side frame, a lifting lug fixing part is arranged in the containing cavity part and is connected with the containing cavity part, namely, a part of a lifting lug structure is fixedly connected in the side frame, so that the connection area of the lifting lug structure and the side frame is increased, and when the battery box is hoisted through a hoisting point sleeve, the connection contact area of the lifting lug structure and the side frame is increased, so that stress applied to the side frame by the lifting lug structure can be dispersed from multiple positions, and the lifting lug structure is prevented from being broken due to the fact that the stress is concentrated at a specific connection position, thereby improving the connection strength of the lifting lug structure and the side frame.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a box body according to an embodiment of the present utility model;

fig. 2 is a schematic structural view of a lifting lug structure and a receiving cavity portion according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a lifting lug structure according to an embodiment of the utility model;

fig. 4 is a schematic structural view of a shackle fixing portion according to an embodiment of the present utility model;

fig. 5 is a schematic structural view of a shackle body portion according to an embodiment of the present utility model.

Reference numerals: 100. a side frame; 1011. a first annular ring body; 1012. a first support rib; 1021. a second annular ring body; 1022. a second support rib; 1023. a straight section; 1024. a vertical section; 1033. a first plug-in connection; 1044. a second plug-in connection; 200. a side frame; 201. a housing chamber portion; 400. a suspension point sleeve.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

As shown in fig. 1 to 5, the present utility model provides a battery box, which comprises a box body and a lifting lug structure, wherein the box body is provided with a side frame 100, and a containing cavity part 201 is arranged in the side frame 100. The lifting lug structure comprises a lifting lug fixing part and a lifting lug main body part, wherein the lifting lug main body part is connected to one side of the lifting lug fixing part, and the lifting lug fixing part is arranged in the accommodating cavity part 201 and is connected with the accommodating cavity part 201, and the lifting lug main body part is arranged outside the side frame 100 and is used for being connected with the lifting point sleeve 400.

It can be appreciated that the lifting lug fixing portion is built in the accommodating cavity portion 201 and is connected with the accommodating cavity portion 201, that is, a part of the lifting lug structure is fixedly connected inside the side frame 100, so that the connection area of the lifting lug structure and the side frame 100 is increased, when the battery box body is lifted through the lifting point sleeve 400, the connection contact area of the lifting lug structure and the side frame 100 is increased, so that stress applied to the side frame 100 by the lifting lug structure can be dispersed from multiple positions, and the lifting lug structure is prevented from being broken due to the fact that the stress is concentrated at a specific connection position, so that the connection strength of the lifting lug structure and the side frame 100 is improved.

In some embodiments, the side frame 100 is a hollow structure, and the outer wall of the side frame 100 is provided with a hole portion to enable the hollow structure to be communicated with the outside, so that the lifting lug fixing portion can be conveniently inserted into the hollow structure of the side frame 100, i.e. the hollow structure is the accommodating cavity portion 201.

In some embodiments, the side frame 100 is a solid structure, and an area of the side frame 100 near the outer wall and a corresponding outer wall area are hollowed out to form the accommodating cavity 201 for accommodating the mounting accommodating cavity 201.

In some embodiments, the shape and the size of the accommodating cavity portion 201 are consistent with those of the lifting lug fixing portion, and the lifting lug fixing portion is arranged in the accommodating cavity portion 201 and connected with the accommodating cavity portion 201, and can form contact connection in multiple directions due to the fact that the shape and the size of the accommodating cavity portion are consistent with those of the lifting lug fixing portion, namely, the accommodating cavity portion 201 and the lifting lug fixing portion are provided with connection contact surfaces in multiple different directions, so that stress applied to the side frame 100 by the lifting lug structure can be dispersed from multiple positions, and lifting lug structure cracking caused by stress concentration at a specific connection position is avoided, and therefore the connection strength of the lifting lug structure and the side frame 100 is improved.

In some embodiments, the length of the receiving cavity portion 201 is greater than the length of the shackle fixing portion, and the width of the receiving cavity portion 201 is equal to the width of the shackle fixing portion.

In some embodiments, the width of the receiving cavity portion 201 is greater than the width of the shackle fixing portion, and the length of the receiving cavity portion 201 is equal to the length of the shackle fixing portion.

In some embodiments, the shackle securing portion is integrally formed with the shackle body portion. That is, by integrally molding the shackle fixing portion and the shackle main body portion, stress damage to the joint between the shackle fixing portion and the shackle main body portion due to separate installation can be avoided.

It will be appreciated that if the lug fixing portion is integrally disposed with the lug main body portion, the lug main body portion needs to be connected to the lug fixing portion by welding or other connecting members, when the battery box is connected to an object such as a carrier through the hanging point sleeve 400, stress is generated at the connection between the lug fixing portion and the lug main body portion due to gravity of the battery box and acting force generated by vibration of the object, and the connection between the lug main body portion and the lug fixing portion is damaged. As in the above embodiment, the accommodating cavity 201 and the lug fixing portion have connection contact surfaces in a plurality of different directions, so that stress applied to the side frame 100 by the lug structure can be dispersed from a plurality of places, and the stress concentration at a specific connection place is avoided to cause the lug structure to be broken, thereby improving the connection strength of the lug structure and the side frame 100.

In some embodiments, the battery case further includes a first connecting member and a second connecting member, the first connecting member sequentially penetrates through the top of the receiving cavity portion 201 and the top of the shackle fixing portion from the top of the side frame 100 and connects them, and the second connecting member sequentially penetrates through the bottom of the receiving cavity portion 201 and the bottom of the shackle fixing portion from the bottom of the side frame 100 and connects them.

It should be noted that, in order to ensure the connection stability between the accommodating cavity portion 201 and the lifting lug fixing portion, the height of the lifting lug fixing portion and the height of the accommodating cavity portion 201 may be set to be a box, that is, the top of the lifting lug fixing portion abuts against the inner top wall of the accommodating cavity portion 201, the bottom of the lifting lug fixing portion abuts against the inner bottom wall of the accommodating cavity portion 201, and the lifting lug fixing portion is connected with the inner top wall of the accommodating cavity portion 201 through the first connecting member and the second connecting member respectively.

It can be understood that if there is a gap between the top of the shackle fixing portion and the inner top wall of the accommodating cavity portion 201 or between the bottom of the shackle fixing portion and the inner bottom wall of the accommodating cavity portion 201, the force generated by the gravity of the battery case and the vibration of the object acts exactly in the vertical direction, so that the shackle fixing portion may deviate or shake in the accommodating cavity portion 201, thereby damaging the first or second connection member. Therefore, the top of the lifting lug fixing part is abutted to the inner top wall of the accommodating cavity part 201, the bottom of the lifting lug fixing part is abutted to the inner bottom wall of the accommodating cavity part 201, so that the top of the lifting lug fixing part and the inner top wall of the accommodating cavity part 201 are not provided with a gap between the bottom of the lifting lug fixing part and the inner bottom wall of the accommodating cavity part 201, the first connecting piece and the second connecting piece are protected, and the connection stability of the accommodating cavity part 201 and the lifting lug fixing part is improved.

In some implementations, the first and second connectors are bolts, and bolt holes to which the side frames 100 and the shackle fixing portions are connected are provided, respectively. The first connecting piece is first bolt, and the top of side frame 100 is provided with runs through the first bolt hole that communicates to holding chamber portion 201, is provided with the second bolt hole that counterpoint with first bolt hole on the top of lug fixed part, and first bolted connection is in first bolt hole and second bolt hole. The second connecting piece is the second bolt, and the bottom of side frame 100 is by running through to holding chamber portion 201 third bolt hole, and the bottom of lug fixed part is provided with the fourth screw hole of counterpointing with the third bolt hole, and the second bolt is connected in third bolt hole and fourth bolt hole.

In some embodiments, the shackle fixing portion includes a first annular ring body 1011 and a first support rib 1012 provided in a portion of the first annular ring body 1011, both ends of the first support rib 1012 being respectively connected to opposite or adjacent sides of the first annular ring body 1011.

It should be noted that, the first annular ring 1011 is generally formed by directly casting or bending a steel plate, and two ends of the first supporting rib 1012 are respectively connected to two opposite sides, or two ends of the first supporting rib 1012 are respectively connected to two adjacent sides, so as to improve the compression resistance of the first annular ring 1011.

In some embodiments, the first annular ring 1011 is provided with a plurality of first support ribs 1012, and a portion of the first support ribs 1012 are connected at both ends to opposite sides of the first annular ring 1011, and a portion of the first support ribs 1012 are connected at both ends to adjacent sides of the first annular ring 1011.

In some embodiments, the first support rib 1012 has a butt portion parallel to the side edge of the first annular ring 1011, the butt portion having a length, the butt portion being connected to the side edge of the first annular ring, thereby improving the connection stability of the first support rib 1012 to the first annular ring 1011 relative to connection by only the shorter length end portion.

In some embodiments, the lifting lug main body portion includes a second annular ring body 1021 and a second supporting rib 1022 disposed in the second annular ring body 1021, two ends of the second supporting rib 1022 are respectively connected to two opposite or adjacent sides under the second annular ring body 1021, and one end of the second annular ring body 1021 is connected to one side of the first annular ring body 1011.

It should be noted that, the second annular ring 1021 and the second support ribs 1022 may be disposed in the manner described above with reference to the first annular ring 1011 and the first support ribs 1012.

One end of the second annular ring 1021 is connected to one side of the first annular ring 1011, and the connection mode may be welding or connection by a connecting piece, and the connecting piece may be a bolt, a screw, or the like.

In one embodiment, the first annular ring 1011 and the second annular ring 1021 are of unitary construction. The first support rib 1012 and the first annular ring 1011 are of unitary construction. The second annular ring 1021 is of unitary construction with the second support rib 1022.

In some embodiments, the second annular ring 1021 includes a first end and a second end, the first end being an end of the second annular ring 1021 that is connected to the first annular ring 1011, the second end being an end of the second annular ring 1021 that is remote from the first annular ring 1011;

The area of the orthographic projection of the first end portion on the first annular ring 1011 is larger than the area of the orthographic projection of the second end portion on the first annular ring 1011.

It will be appreciated that the area of the orthographic projection of the first end portion onto the first annular ring 1011 is larger than the area of the orthographic projection of the second end portion onto the first annular ring 1011, i.e., the first end portion is larger than the second end portion, thereby having a greater number of structures at the second end portion where the orthographic projection of the first annular ring 1011 is not available. The front projection of the first end portion coincides with the front projection of the second end portion, and the structure of the portion that is more than the second end portion can be equivalent to increasing the thickness of the second annular ring 1021, thereby improving the bearing capacity of the second annular ring 1021.

In some embodiments, the second annular ring 1021 includes a straight section 1023 and a vertical section 1024 connected to one side of the straight section 1023, wherein an end of the straight section 1023 near the first annular ring 1011 is flush with an end of the vertical section 1024 near the first annular ring 1011, and both ends near the side frame 100 are connected to the first annular ring 1011, and the suspension point sleeve 400 is connected to the straight section 1023.

That is, the vertical section 1024 is a portion that is more than the second end in the above example, which can relatively increase the thickness of the second annular ring 1021 near the side of the first annular ring 1011, and simultaneously improve a certain support for the vertical section 1024, so as to improve the bearing capacity of the portion of the vertical section 1024 connected to the hanging point sleeve 400.

In some embodiments, the suspension point sleeve 400 is disposed on a section of the straight section 1023 remote from the vertical section 1024.

In some embodiments, the shackle structure has a near ground side and a far ground side, the shackle structure having a sleeve mounting hole disposed therethrough;

The suspension point sleeve 400 includes a bottom portion and a main body portion disposed on the bottom portion, the bottom portion is abutted to and connected with the ground near side, and the main body portion is disposed in the sleeve mounting hole.

In some embodiments, the accommodating cavity part is provided with an inserting hole part, the lifting lug fixing part is provided with an inserting part which is in inserting fit with the inserting hole part, and when the lifting lug fixing part is arranged in the accommodating cavity part, the inserting part is inserted into the inserting hole part.

It should be noted that, a hole-shaped structure is generally concave from the side wall of the accommodating cavity, the hole-shaped structure is an insertion hole, and the hole-shaped structure can be a through hole or a blind hole; the grafting portion is formed in the bellying of lug fixed part, and this bellying is protruding towards the inner wall of side frame for insert blind hole or the through-hole on the holding chamber portion inner wall, form grafting cooperation, thereby improve the connection stability of lug fixed part and side frame, with the hoist and mount stability that improves the battery package.

For example, in some embodiments, the first annular ring 1011 has a first mating portion 1033 near the top of the side frame 100, and the first annular ring 1011 has a second mating portion 1044 near the bottom of the side frame 100; the side frame 100 is provided with a first insertion hole portion which is inserted into the first insertion portion 1033 in a matching manner, and a second insertion hole portion which is inserted into the second insertion portion 1044 in a matching manner.

In some embodiments, the case body further includes a bottom plate and a cover plate, the cover plate covers the top of the side frame 100, and the bottom plate is connected to the bottom of the side frame 100.

It will be appreciated that the cover, bottom mating side frame 100 forms a cell receiving cavity for receiving a cell module.

In some embodiments, the utility model further provides a battery pack, the battery pack comprises the battery cell module and the battery box body, the battery box body further comprises a bottom plate and a cover plate, the cover plate covers the top of the side frame, the bottom plate is connected to the bottom of the side frame, the bottom plate, the side frame and the cover plate are matched to form a battery cell accommodating cavity, and the battery cell module is arranged in the battery cell accommodating cavity. Because the battery pack includes the battery case of the above embodiment, it has at least some or all of the beneficial effects of the above embodiment of the battery case, and will not be described in detail herein.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A battery box, comprising:

The box body is provided with a side frame (100), and the side frame (100) is internally provided with a containing cavity part (201);

The lifting lug structure comprises a lifting lug fixing part and a lifting lug main body part, wherein the lifting lug main body part is connected to one side of the lifting lug fixing part, the lifting lug fixing part is arranged in the accommodating cavity part (201) and is connected with the accommodating cavity part (201), and the lifting lug main body part is positioned outside the side frame (100) and is used for being connected with a lifting point sleeve (400).

2. The battery box of claim 1, wherein the shackle securing portion is integrally formed with the shackle body portion.

3. The battery box according to claim 2, further comprising a first connecting member and a second connecting member, the first connecting member sequentially penetrating from the top of the side frame (100) through the top of the accommodating chamber portion (201) and the top of the lug fixing portion and connecting them, and the second connecting member sequentially penetrating from the bottom of the side frame (100) through the bottom of the accommodating chamber portion (201) and the bottom of the lug fixing portion and connecting them.

4. The battery case according to claim 1, wherein the shackle fixing portion includes a first annular ring body (1011) and a first support rib (1012) provided in a portion of the first annular ring body (1011), both ends of the first support rib (1012) being connected to sides of the first annular ring body (1011) opposite or adjacent to each other, respectively.

5. The battery box body according to claim 4, wherein the lug main body portion includes a second annular ring body (1021) and a second support rib (1022) provided in the second annular ring body (1021), both ends of the second support rib (1022) are respectively connected with two sides of the second annular ring body (1021) which are opposite or adjacent to each other, and one end of the second annular ring body (1021) is connected with one side of the first annular ring body (1011).

6. The battery case according to claim 5, wherein the second annular ring body (1021) includes a first end portion, which is an end of the second annular ring body (1021) connected to the first annular ring body (1011), and a second end portion, which is an end of the second annular ring body (1021) remote from the first annular ring body (1011);

An area of an orthographic projection of the first end portion on the first annular ring body (1011) is larger than an area of an orthographic projection of the second end portion on the first annular ring body (1011).

7. The battery case according to claim 6, wherein the second annular ring body (1021) includes a flat section (1023) and a vertical section (1024) connected to one side of the flat section (1023), an end of the flat section (1023) near the first annular ring body (1011) is flush with an end of the vertical section (1024) near the first annular ring body (1011), and both ends near the side frame (100) are connected to the first annular ring body (1011), and the hanging point sleeve (400) is connected to the flat section (1023).

8. The battery box of claim 1, wherein the shackle structure has a proximal side and a distal side, the shackle structure having a sleeve mounting hole disposed therethrough;

The hoisting point sleeve (400) comprises a bottom and a main body part arranged on the bottom, wherein the bottom is abutted to the near-ground side and connected with the near-ground side, and the main body part is arranged in the sleeve mounting hole.

9. The battery box according to claim 1, wherein the accommodating chamber portion has therein an insertion hole portion, the lug fixing portion has thereon an insertion portion to be inserted and fitted with the insertion hole portion, and the insertion portion is inserted into the insertion hole portion when the lug fixing portion is disposed in the accommodating chamber portion.

10. A battery pack, comprising:

a battery cell module;

The battery box of any one of claims 1-9, further comprising a bottom plate and a cover plate, wherein the cover plate covers the top of the side frames, the bottom plate is connected to the bottom of the side frames, the bottom plate, the side frames and the cover plate cooperate to form a cell accommodating cavity, and the cell module is arranged in the cell accommodating cavity.